=============================================== Format for the ARS micronet 5-minute data files Version: a5m001 Date: 1997-10-02 =============================================== JOSS ADDITION TO README FILE: The sites included within this data set are: a121 ARS Site 121 34.9586 -97.8986 343 a134 ARS Site 134 34.9367 -98.0753 384 a150 ARS Site 150 34.9061 -98.2511 431 a156 ARS Site 156 34.8431 -97.9583 397 a162 ARS Site 162 34.8075 -98.1414 405 a182 ARS Site 182 34.8450 -98.0731 370 JOSS kept the data in the same format as described below. However, JOSS put one complete months worth of data within each file. Within each file the data is ordered as follows: All data from site a121 (ordered from first of month to end of month), then a134, a150, a156, a162, and a182. JOSS in no other way changed any of these data. JOSS conducted no quality control of these data. The file names are structured as follows: ????????_199604_ars_washita.txt.Z The ???? is just a CODIAC ID and has no importance. 1996 is the year, 04 is th month (April) ars_washita signifies that this is the USDA/ARS Little Washita Micronet Surface Data Set. END OF JOSS ADDITION TO README FILE. This file describes the 5-minute ARS micronet data files. Each data file contains a line each for the version reference string, the 4-letter station ID, the date and a blank line. These are followed by a data-header line and finally the data. version ------- This gives the version reference string for the file's data format and units. If either format or units are revised then the version also will be changed. (At the top of this document is the version for the specific file type that this document describes.) station ------- The station ID of the file. date ---- The year, month and day separated by "-". The date is followed by a blank line. header ------ The header line gives the organization for the data records. The header line contains the following: STID - station ID (same as above) TIME - CST time (hours and minutes separated by a space) RAIN - accumulated rainfall (mm) RELH - relative humidity (%) TAIR - air temperature at 1.5 m (deg(C) SRAD - solar radiation (W/m^2) TS05 - soil temperature at 05 cm depth (deg-C) TS10 - soil temperature at 10 cm depth (deg-C) TS15 - soil temperature at 15 cm depth (deg-C) TS30 - soil temperature at 30 cm depth (deg-C) BATV - battery voltage (volts) FLSV - flag status value Most parameters are followed by a "Q". This indicates a column for the quality check (QC) character. Data ---- Each line of data contains values associated with the header representation. For most parameters there is an associated QC character which represents the following: g - good (passed QC tests - extremely low probability of error) S - suspect (QC tests indicate some suspicion - low probability of error) W - warning (several QC test failures - high probability of error) F - failure (known error) M - missing (data not received) I - ignore N - not installed U - unknown The values for the parameters RAIN, RELH, TAIR, SRAD, and FLSV are valid for the 5-minute period ending at the specified time. All other parameters are valid for the 15-minute period ending at the specified time. The 15-minute parameter values are included only every third record. For the other two times the values are set to -999.0. Note on FLSV ------------ A non-zero value for FLSV indicates that a technician was servicing the site. All data should be checked thoroughly to the users satisfaction before using. Sample Format ------------- For reading the data line in FORTRAN 77 the following format statement could be used: format (x, a4, 2x, i2, x, i2, f8.2, x, a1, 7(f7.1, x, a1), f7.1, i7) Disclaimer ---------- The ARS Micronet data of the Little Washita River Watershed are accepted and used by the recipient upon the express understanding that the ARS and it's employees make no warranties, expressed or implied, concerning the accuracy, completeness, reliability or suitability for any one purpose, and that ARS and it's employees shall be under no liability to any person by reason of any use made thereof. Though the ARS Micronet data of the Little Washita River Watershed is freely accessible to the public, the ARS requests that the recipient of the ARS Micronet data does not distribute, publish or disseminate the data under the recipient's name without full and up-front acknowledgement of ARS as the source of the data. The ARS should be acknowledged in any publication making use of ARS Micronet data. The data can be requested by anyone from the ARS Micronet Data manager at USDS-ARS, 7207 W. Cheyenne St., El Reno, OK 73036.